The chief executive of a Western Australian Wheatbelt small business centre says the loss of regional bus routes, servicing parts of the state's south, is a major blow to the viability of many small towns.

The Pastoralists and Graziers Association (PGA) of Western Australia says it is confident it will enjoy a strong working relationship with the new federal Agriculture Minister, despite differences over foreign investment issues.

The Nationals' candidate for the Western Australian seat of O'Connor, Chub Witham, says the Australian Electoral Commission (AEC) called him during Saturday's election regarding "fake" how-to-vote cards which were distributed in Kalgoorlie-Boulder.